Presentations -
-
医療被ばく実測に向けたCT画像への影響の少ないリアルタイムOSL線量計の開発
後藤 聡汰, 霞末 拓也, 高久 圭二, 前田 達哉, 竹上 和希, 淺原 孝, 林 裕晃
第81回日本放射線技術学会総会学術大会(JRC2025) 2025.4
-
Photon Counting Detector CTで生成したハイドロキシアパタイト画像を用いた冠動脈プラーク定量評価の臨床試験
三谷 愛, 淺原 孝, 森光 祐介, 赤木 憲明, 井上 智洋, 林 裕晃, 本田 貢
第81回日本放射線技術学会総会学術大会(JRC2025) 2025.4
-
Novel procedure to derive relationship between surface and internal doses taking into consideration X-ray incident direction during helical CT examinations
Kazuki Takegami, Tatsuya Maeda, Sota Goto, Takashi Asahara, Natsumi Kimoto, Rina Nishigami, Daiki Kobayashi, Hiroaki Hayashi
The 4th International Conference on Radiological Physics and Technology (ICRPT) 2025.4
-
Effective Atomic Number Score in Calcified Plaque Evaluation: Approach Using Photon-Counting CT
Takashi Asahara, Mana Ikegami, Natsumi Kimoto, Rina Nishigami, Yusuke Morimitsu, Noriaki Akagi, Mitsugi Honda, Toru Miyoshi, Hiroaki Hayashi, Toshihiro Iguchi
The 4th International Conference on Radiological Physics and Technology (ICRPT) 2025.4
-
A novel algorithm for generating virtual high-contrast images based on X-ray attenuation analysis using an energy-resolving photon-counting detector
Rina Nishigami, Hiroaki Hayashi, Daiki Kobayashi, Natsumi Kimoto, Takashi Asahara, Tatsuya Maeda, Sota Goto, Yuki Kanazawa, Tomonobu Haba, Shuichiro Yamamoto
The 4th International Conference on Radiological Physics and Technology (ICRPT) 2025.4
-
Functional imaging using energy-resolving photon counting detector at the high-counting-rate clinical condition
Natsumi Kimoto, Rina Nishigami, Daiki Kobayashi, Takashi Asahara, Tatsuya Maeda, Sota Goto, Akitoshi Katsumata, Shuichiro Yamamoto, Hiroaki Hayashi
European Congress of Radiology (ECR) 2025.3
-
Patient CT dosimetry using an OSL dosimeter with consideration for X-ray incident direction
Hiroaki Hayashi, Sota Goto, Tatsuya Maeda, Kazuki Takegami, Rina Nishigami, Daiki Kobayashi, Takashi Asahara, Natsumi Kimoto, Yuki Kanazawa
European Congress of Radiology (ECR) 2025.3
-
Dental forensic application of effective atomic number images generated using photon-counting CT
Takashi Asahara, Hiroaki Hayashi, Shunsuke Okada, Chihiro Yamaguchi, Natsumi Kimoto, Sota Goto, Rina Nishigami, Yusuke Morimitsu, Toshihiro Iguchi
European Congress of Radiology (ECR) 2025.3
-
How can we use effective atomic number information generated by photon-counting computed tomography? – A proposal for application to dental forensics –
Takashi Asahara, Hiroaki Hayashi, Shunsuke Okada, Tatsuya Maeda, Natsumi Kimoto, Rina Nishigami, Daiki Kobayashi, Chihiro Yamaguchi, Yusuke Morimitsu, Noriaki Akagi, Toshihiro Iguchi
The 110th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA) 2024.12
-
フォトンカウンティングCTにおける耳小骨画像の再構成関数の検討
西井 宗一郎, 生口 俊浩, 森光 祐介, 梶﨑 創太, 淺原 孝, 井上 爽, 赤木 憲明, 本田 貢
第1回 日本放射線医療技術学術大会 2024.10
-
Photon Counting Detector CTを用いた冠動脈プラークの解析手法の提案
池上 愛, 淺原 孝, 森光 祐介, 赤木 憲明, 井上 智洋, 林 裕晃, 本田 貢
第20回 中四国放射線医療技術フォーラム 2024.10
-
Pulse Pile-up Correction of Objects with Various Atomic Numbers for Clinical Applications Using a Photon Counting Detector
Natsumi Kimoto, Hiroaki Hayashi, Rina Nishigami, Daiki Kobayashi, Takashi Asahara, Tatsuya Maeda, Akitoshi Katsumata, Shuichiro Yamamoto
The 2024 IEEE Nuclear Science Symposium and Medical Imaging Conference 2024.10
-
Clinical study of patient surface dose measurement taking into consideration the differences of the X-ray incident angle during chest CT examination
Sota Goto, Hiroaki Hayashi, Tatsuya Maeda, Daiki Kobayashi, Takashi Asahara, Natsumi Kimoto, Yuki Kanazawa, Kazuta Yamashita, Kosaku Higashino, Shinya Takarabe, Taku Kuramoto
24th Asia-Oceania Congress of Medical Physics (AOCMP) 2024.10
-
System design to realize functional and conventional images during single X-ray irradiation using a photon counting detector
Rina Nishigami, Hiroaki Hayashi, Daiki Kobayashi, Tatesuya Maeda, Takashi Asahara, Yuki Kanazawa, Natsumi Kimoto, Shuichiro Yamamoto
The 2024 IEEE Nuclear Science Symposium and Medical Imaging Conference 2024.10
-
Lu-177を用いた核医学治療における医療従事者の水晶体被ばく防護に向けた鉛遮蔽効果のシミュレーション評価
井上 爽, 淺原 孝, 生口 俊浩, 長谷川 大輔, 吉富 敬祐, 後藤 聡汰
第20回 中国四国放射線医療技術フォーラム 2024.10
-
Photon counting detector CTを用いた線量計算におけるCT値-電子密度の変換精度の評価
辻村 萌, 淺原 孝, 森下 和恭, 田辺 悦章, 生口 俊浩, 青山 英樹, 大塚 裕太, 河合 佑太, 本田 貢, 吉尾 浩太郎
第20回 中国四国放射線医療技術フォーラム 2024.10
-
技術編: 検出器の技術革新から知るPCD-CT Invited
淺原 孝
第9回 中国SOMATOM研究会 2024.9.5
-
Convenient procedure to determine a dose reduction factor of the collar-type thyroid shield used for the chest CT examination
Kazuki Takegami, Hiroaki Hayashi, Tatsuya Maeda, Sota Goto, Takashi Asahara, Rina Nishigami, Daiki Kobayashi, Shuichi Murakami, Takeshi Konishi, Motochika Maki
The 3rd International Conference on Radiological Physics and Technology (ICRPT) 2024.4
-
A novel evaluation procedure of X-ray shielding ability by estimating X-ray incident direction during helical CT examination
Tetsuya Maeda, Hiroaki Hayashi, Sota Goto, Kazuki Takegami, Takashi Asahara, Daiki Kobayashi, Rina Nishigami, Takeshi Konishi, Shuichi Murakami, Motochika Maki
The 3rd International Conference on Radiological Physics and Technology (ICRPT) 2024.4
-
A novel analysis method to determine surface radiation dose taking into account the incident angle of X-rays during a helical scanning CT examination
Sota Goto, Hiroaki Hayashi, Tatsuya Maeda, Kazuki Takegami, Rina Nishigami, Daiki Kobayashi, Takashi Asahara, Yuki Kanazawa
The 3rd International Conference on Radiological Physics and Technology (ICRPT) 2024.4
-
A correction method for image blurring to derive accurate quantitative material information using an energy resolving photon counting detector
Daiki Kobayashi, Hiroaki Hayashi, Rina Nishigami, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Akitoshi Katsumata, Natsumi Kimoto, Shuichiro Yamamoto
The 3rd International Conference on Radiological Physics and Technology (ICRPT) 2024.4
-
Discrimination of non-metal dental material using photon counting CT toward identifying human remains
Takashi Asahara, Shunsuke Okada, Chihiro Kurose, Hiroaki Hayashi, Rina Nishigami, Daiki Kobayashi, Sota Goto, Yusuke Morimitsu, Noriaki Akagi, Mitsugi Honda
The 3rd International Conference on Radiological Physics and Technology (ICRPT) 2024.4
-
Suitability of High Tube Voltage Imaging for General Radiography When Using Energy Resolving Photon Counting Detectors
Rina Nishigami, Hiroaki Hayashi, Daiki Kobayashi, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Tomonobu Haba, Natsumi Kimoto, Shuichiro Yamamoto
The 3rd International Conference on Radiological Physics and Technology (ICRPT) 2024.4
-
Direct dose measurement method during chest CT examination by taking into consideration the X-ray incident direction
Hiroaki HAYASHI, Tatsuya MAEDA, Sota GOTO, Kazuki TAKEGAMI, Takashi ASAHARA, Rina NISHIGAMI, Daiki KOBAYASHI, Yuki KANAZAWA, Kazuta YAMASHITA
European Congress of Radiology, ECR2024 2024.2
-
Applicability of high tube voltage imaging to achieve accurate quantitative images when applying photon counting detectors to general radiography
Rina Nishigami, Hiroaki Hayashi, Daiki Kobayashi, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Natsumi Kimoto, Shuichiro Yamamoto
SPIE Medical Imaging 2024 2024.2
-
Will general radiography become more valuable when exploiting the performance of a photon counting detector?
Daiki KOBAYASHI, Hiroaki HAYASHI, Rina NISHIGAMI, Cheonghae LEE, Tatsuya MAEDA, TAKASHI ASAHARA, Yuki KANAZAWA, Akitoshi KATSUMATA, Natsumi KIMOTO, Shuichiro YAMAMOTO
The 109th Scientific Assembly and Annual Meeting of the Radiological Society of North America 2023.11
-
Simulation study on functional images to optimize radiographic condition using energy resolving photon counting detector
Rina Nishigami, Hiroaki Hayashi, Daiki Kobayashi, Cheonghae Lee, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Natsumi Kimoto, Shuichiro Yamamoto
The 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference 2023.11
-
散乱X線の入射角度を解析できる新しい概念のアクティブ型線量計の設計とIVRでの使用を想定した実証実験
前田直輝, 淺原孝, 山内崇嗣, 本田貢, 林裕晃, 前田達哉, 小林大空, 井上智洋, 小林大地, 池上愛
第19回中四国放射線医療技術フォーラムCSFRT2023 2023.11
-
使用経験から知るフォトンカウンティングCT ～検出器の技術革新を理解する～ Invited
淺原 孝
第18回 九州放射線医療技術学術大会シンポジウム 2023.11
-
Automatic determination algorithm of intrinsic parameters on response function of energy-resolving photon counting imaging detector
Cheonghae Lee, Hiroaki Hayashi, Daiki Kobayashi, Rina Nishigami, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Akitoshi Katsumata, Natsumi Kimoto, Shuichiro Yamamoto
The 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference 2023.11
-
How can we establish direct radiation dose measurement during CT examinations?
Hiroaki HAYASHI, Tatsuya MAEDA, Kazuki TAKEGAMI, Sota GOTO, Rina NISHIGAMI, Daiki KOBAYASHI, Takashi ASAHARA, Yuki KANAZAWA, Kazuta YAMASHITA, Kosaku HIGASHINO
The 109th Scientific Assembly and Annual Meeting of the Radiological Society of North America 2023.11
-
フォトンカウンティングCTを用いた実効原子番号画像による非金属歯科材料の弁別
淺原孝, 岡田俊輔, 李青海, 林裕晃, 黒瀬千尋, 森光祐介, 赤木憲明, 本田貢, 西上莉奈, 小林大空
第51回日本放射線技術学会秋季学術大会 2023.10
-
Feasibility study of X-ray shielding procedure for reducing thyroid dose caused by overranging effect during CT examination
Kazuki Takegami, Tatsuya Maeda, Hiroaki Hayashi, Rina Nishigami, Cheonghae Lee, Takashi Asahara, Sota Goto, Shuichiro Murakami, Takeshi Konishi, Motochika Maki
the 39th Japan Conference of Radiological Technologists（39JCRT）and the 30th East Asia Conference of Radiological Technologists (30EACRT) 2023.9
-
Exposure Dose Reduction in Medical X-ray Diagnostics for BMD Measurement
Tatsuya MAEDA, Hiroaki HAYASHI, Miku ANDO, Rina NISHIGAMI, Daiki KOBAYASHI, Cheonghae LEE, Takashi ASAHARA, Sota GOTO, Kazuki TAKEGAMI, Kazuta YAMASHITA, Kosaku HIGASHINO, Shuichi MURAKAMI, Takeshi KONISHI, Motochika MAKI
20th International Conference on Solid State Dosimetry (SSD20) 2023.9
-
An active-type personal dosimeter having functions to derive both incident direction and absolute dose of scattered X-rays during clinical X-ray examinations
Takashi ASAHARA, Hiroaki HAYASHI, Tatsuya MAEDA, Daiki KOBAYASHI, Sota GOTO, Rina NISHIGAMI, Miku ANDO, Cheonghae LEE, Yuki KANAZAWA, Kazuta YAMASHITA, Naoki MAEDA, Satoshi IMAJO, Mitsugi HONDA
20th International Conference on Solid State Dosimetry (SSD20) 2023.9
-
Evidence of exposure dose reduction outside the scanning region during fast scan chest CT examination through the use of an X-ray shield
Hiroaki HAYASHI, Tatsuya MAEDA, Kazuki TAKEGAMI, Rina NISHIGAMI, Daiki KOBAYASHI, Cheonghae LEE, Takashi ASAHARA, Sota GOTO, Miku ANDO, Yuki KANAZAWA, Kazuta YAMASHITA, Kosaku HIGASHINO, Shuichi MURAKAMI, Takeshi KONISHI, Motochika MAKI
20th International Conference on Solid State Dosimetry (SSD20) 2023.9
-
Thyroid dose reduction related to the overranging effect by using a novel sponge-type shield during high-pitch chest CT examination
Kazuki Takegami, Hiroaki Hayashi, Tatsuya Maeda, Cheonghae Lee, Rina Nishigami, Takashi Asahara, Shuichi Murakami, Takeshi Konishi, Motochika Maki
2nd International Conference on Radiological Physics and Technology (ICRPT) 2023.4
-
A novel function for wearable dosimeters: to determine both incident direction and absolute dose of X-rays during IVR procedure
Takashi Asahara, Hiroaki Hayashi, Tatsuya Maeda, Daiki Kobayashi, Sota Goto, Cheonghae Lee, Yuki Kanazawa, Naoki Maeda, Satoshi Imajo, Mitsugi Honda
2nd International Conference on Radiological Physics and Technology (ICRPT) 2023.4
-
Suitability of High-Tube-Voltage Imaging When Using Energy Resolving Photon Counting Detector (ERPCD): Simulation Study
Rina Nishigami, Hiroaki Hayashi, Cheonghae Lee, Daiki Kobayashi, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Tomonobu Haba, Natsumi Kimoto, Shuichiro Yamamoto
2nd International Conference on Radiological Physics and Technology (ICRPT) 2023.4
-
A correction method for object edge blurring that is effective for quantitative analysis using photon counting imaging
Daiki Kobayashi, Hiroaki Hayashi, Cheonghae Lee, Rina Nishigami, Tatsuya Maeda, Takashi Asahara, Yuki Kanazawa, Akitoshi Katsumata, Natsumi Kimoto, Shuichiro Yamamoto
2nd International Conference on Radiological Physics and Technology (ICRPT) 2023.4
-
Practical procedure to reduce thyroid dose related to the overranging effect during fast chest CT examination using a novel sponge shield with embedded fine bismuth particles
Kazuki Takegami, Hiroaki Hayashi, Tatsuya Maeda, Cheonghae Lee, Rina Nishigami, Takashi Asahara, Shuichi Murakami, Takeshi Konishi, Motochika Maki
European Congress of Radiology (ECR) 2023.3
-
A wearable active-type dosimeter having novel functions to derive both incident direction and absolute dose of scattered X-rays during IVR procedures
Takashi Asahara, Hiroaki Hayashi, Tatsuya Maeda, Sota Goto, Daiki Kobayashi, Cheonghae Lee, Yuki Kanazawa, Naoki Maeda, Mitsugi Honda
European Congress of Radiology (ECR) 2023.3
-
ディスポ型自作直腸線量計を用いた子宮頸がん治療における線量の実測
林 裕晃, 前田達哉, 淺原 孝, 後藤聡汰, 竹上和希, 李 青海, 安藤未来, 金澤裕樹, 生島仁史, 岡崎 徹, 橋詰拓弥
第3回日本放射線安全管理学会・日本保健物理学会合同大会 2021.12
-
What Information Can We Derive From In-vivo Rectum Dose Measurement During RALS Irradiation?
Hiroaki HAYASHI, Natsumi KIMOTO, Tatsuya MAEDA, Takashi ASAHARA, Sota GOTO, Cheonghae Lee, Miku ANDO, Yuki KANAZAWA, Hitoshi IKUSHIMA, Tohru OKAZAKI, Takuya HASHIZUME
RSNA2021 2021.11
-
Trial to Fabricate a Radiation Dosimeter Having Functions to Determine Both Incident Angle and Exposure Dose of Scattered X-rays
Takashi Asahara, Hiroaki Hayashi, Tatsuya Maeda, Satoshi Imajo, Miho Numata, Mitsugi Honda
3rd Technological Competency As Caring In The Health Sciences 2021.8
-
How can we perform actual dose measurement? Clinically applicable procedures and its impact
Takashi Asahara, Hiroaki Hayashi, Natsumi Kimoto, Sota Goto, Kazuki Takegami, Tatsuya Maeda, Cheonghae Lee, Yuki Kanazawa, Kazuta Yamashita, Kosaku Higashino
RSNA2020 2020.12
-
A Novel Algorithm for Material Identification Based on a Photon Counting Technique -Toward the Development of a Quantitative Plain X-ray Diagnosis Using an Effective Atomic Number Image-
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Takashi Asahara, Akitoshi Katsumata, Shuichiro Yamamoto, Masahiro Okada
第76回日本放射線技術学会総会学術大会 2020.4
-
Phantom study using novel shaped OSL dosimeters having smaller angular dependence toward actual dose measurement during clinical X-ray examination
Sota Goto, Hiroaki Hayashi, Emi Tomita, Takashi Asahara, Kaho Ikushima, Momoka kuwabara, Yuki Kanazawa
第76回日本放射線技術学会総会学術大会 2020.4
-
Dual-type active dosimeter having a novel algorithm to identify incident angles of X-rays
Takashi Asahara, Hiroaki Hayashi, Tatsuya Maeda, Yuki Kanazawa, Satoshi Imajo, Miho Numata, Mitsugi Honda
第76回日本放射線技術学会総会学術大会 2020.4
-
Dose calibration factor of an OSL dosimeter during CT examination to measure exposure dose of patients taking into consideration proper X-ray quality
Kazuki Takegami, Hiroaki Hayashi, Takashi Asahara, Sota Goto, Emi Tomita, Natsumi Kimoto, Yuki Kanazawa, Shohei Kudomi
ECR2020 2020.3
-
Photon counting technique: How to analyze a novel quantitative image?
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Takashi Asahara, Tatsuya Maeda, Akitoshi Katsumata, Yuki Kanazawa, Shuji Koyama, Shuichiro Yamamoto, Masahiro Okada
RSNA2019 2019.12
-
Feasibility study of photon counting detector for producing effective atomic number image
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Takashi Asahara, Tatsuya Maeda, Yuki Kanazawa, Akitoshi Katsumata, Shuichiro Yamamoto, Masahiro Okada
IEEE Nuclear Science Symposium and Medical Imaging Conference 2019.10
-
Importance of considering the response function of photon counting detectors with the goal of precise material identification
Takumi Asakawa, Hiroaki Hayashi, Natsumi Kimoto, Takashi Asahara, Tatsuya Maeda, Shuji Koyama, Shuichiro Yamamoto, Masahiro Okada
IEEE Nuclear Science Symposium and Medical Imaging Conference 2019.10
-
Practical calibration curve for a small-type OSL dosimeter to measure exposure dose of patients during medical X-ray diagnosis
Kazuki Takegami, Hiroaki Hayashi, Natsumi Kimoto, Sota Goto, Emi Tomita, Asahara Takashi, Yoshiki Mihara, Yuki Kanazawa
19th International Conference on Solid State Dosimetry (SSD19) 2019.9
-
Novel Disk-Shaped OSL Dosimeter Having Smaller Angular Dependence
Sota GOTO, Hiroaki HAYASHI, Emi TOMITA, Takashi ASAHARA, Natsumi KIMOTO, Yuki KANAZAWA, Hidetoshi YAMAGUCHI, Morihito SHIMIZU
19th International Conference on Solid State Dosimetry (SSD19) 2019.9
-
Precise dose calibration method of OSL dosimeter with help of X-ray spectra toward exposure dose evaluation of eye lens
Takashi Asahara, Hiroaki Hayashi, Sota Goto, Emi Tomita, Natsumi Kimoto, Takumi Asakawa, Kazuki Takegami, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume
19th International Conference on Solid State Dosimetry (SSD19) 2019.9
-
医療用連続X線を用いたフォトンカウンティング検出器による実効原子番号画像
紀本夏実, 林裕晃, 淺川巧, 淺原孝, 前田達哉, 金澤裕樹, 勝又明敏, 山本修一郎, 岡田雅宏
第2回量子線イメージング研究会 2019.9
-
Development of a Clinically Applicable Rectum Dosimeter for Brachytherapy using an Optically Stimulated Luminescence Dosimeter
Emi Tomita, Hiroaki Hayashi, Takashi Asahara, Natsumi Kimoto, Sota Goto, Yuki Kanazawa, Yasufumi Shitakubo, Kanako Sakuragawa, Hitoshi Ikushima, Tohru Okazaki, Takuya Hashizume
19th International Conference on Solid State Dosimetry (SSD19) 2019.9
-
子宮頸癌の腔内照射における直腸線量実測に向けたディスポーザブル型直腸線量計の開発
冨田恵美, 林裕晃, 淺原孝, 下窪康史, 櫻川加奈子, 金澤裕樹, 生島仁史
日本放射線腫瘍学会小線源治療部会第21回学術大会 2019.5
-
Monte-Carlo Simulation of Photon Counting Detector towards Production of Effective Atomic Number Images Using Continuous X-rays
Takumi Asakawa, Hiroaki Hayashi, Natsumi Kimoto, Takashi Asahara, Emi Tomita, Shuichiro Yamamoto, Masahiro Okada
第75回放射線技術学会総会学術大会 2019.4
-
Actual Dose Measurement of Assistants while Positioning Patients during Pediatric X-ray Examination Using a Small-type Optically Stimulated Luminescence Dosimeter
Takashi Asahara, Hiroaki Hayashi, Yoshiki Mihara, Emi Tomita, Yuki Kanazawa, Kenji Yamada, Tohru Okazaki
第75回放射線技術学会総会学術大会 2019.4
-
Evaluation of dose to risk organ during brachytherapy for cervical cancer using a novel passive rectum dosimeter
Emi Tomita, Hiroaki Hayashi, Takashi Asahara, Yasufumi Shitakubo, Kanako Sakuragawa, Hitoshi Ikushima, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume
European Congress of Radiology 2019.3
-
Actual dose measurements of assistant during pediatric X-ray examination with a precisely calibrated optically stimulated luminescence dosimeter
Takashi Asahara, Hiroaki Hayashi, Emi Tomita, Yoshiki Mihara, Sota Goto, Yuki Kanazawa, Natsumi Kimoto, Takumi Asakawa, Tohru Okazaki
European Congress of Radiology 2019.3
-
Determining the difference of calibration factors in diagnostic X-rays and mono-energetic X-rays of the small type OSL dosimeter for a more precise dose evaluation in diagnostic X-ray examinations
Tohru Okazaki, Hiroaki Hayashi, Sota Goto, Takashi Asahara, Emi Tomita, Yuki Kanazawa, Takuya Hashizume, Vergil Cruz, Cheng Wei Hsin
European Congress of Radiology 2019.3
-
Effective atomic number image produced with energy-resolved photon counting detector toward the development of next-generation plain X-ray diagnosis
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Takashi Asahara, Akitoshi Katsumata, Yuki Kanazawa, Shuichiro Yamamoto, Masahiro Okada
European Congress of Radiology 2019.3
-
小型OSL線量計の診断用X線に対する応答のエネルギー依存性の精密評価
岡崎徹, 林裕晃, 後藤聡汰, 淺原孝, 冨田恵美, 金澤裕樹, 橋詰拓弥, Vergil Cruz, Cheng Wei Hsin
日本放射線安全管理学会 第17回 学術大会 2018.12
-
Trial study for development of a novel-formed dosimeter having lower angular dependence
Sota GOTO, Hiroaki HAYASHI, Emi TOMITA, Natsumi KIMOTO, Takumi UEHARA, Yuki KANAZAWA, Takumi ASAKAWA, Takashi ASAHARA, Tohru OKAZAKI, Takuya HASHIZUME
18th Asia-Oceania Congress of Medical Physics (AOCMP) 2018.11
-
Evaluating the energy dependence of the small type Optically Stimulated Luminescence (OSL) “nanoDot” dosimeters in the energy region of diagnostic X-rays by using Monte Carlo Simulation
Vergil L E Cruz, Tohru Okazaki, Hiroaki Hayashi, Takashi Asahara, Sota Goto, Yoshiki Mihara, Emi Tomita, Yuki Kanazawa, Natsumi Kimoto, Takuya Hashizume, Cheng Wei Hsin
18th Asia-Oceania Congress of Medical Physics (AOCMP) 2018.11
-
Reproduction of response functions of a multi-pixel-type energy-resolved photon counting detector while taking into consideration interaction of X-rays, charge sharing and energy resolution
Natsumi Kimoto, Hiroaki Hayashi, Takashi Asahara, Emi Tomita, Sota Goto, Yuki Kanazawa, Shuichiro Yamamoto, Masahiro Okada, Masashi Yamasaki
25th International Symposium on Room-Temperature Semiconductor X-ray & Gamma-ray Detectors, IEEE(MIC) 2018.11
-
First Trial of Actual Dose Measurement of Organ at Risk During Brachytherapy for Cervical Cancer in Tokushima University Hospital
Emi Tomita, Hiroaki Hayashi, Takashi Asahara, Yasufumi Shitakubo, Kanako Sakuragawa, Hitoshi Ikushima, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume
2nd International Seminar and Workshop on Technological Competency as Caring in the Health Science 2018.8
-
小型OSL線量計を用いたIVR術者水晶体被ばく線量測定に向けた線量値の信頼性の検証
岡崎 徹, 淺原 孝, 橋詰 拓弥, Vergil Cruz, Cheng Wei Hsin, 林 裕晃, 冨田 恵美, 後藤 聡汰, 三原 由樹, 金澤 裕樹, 横山 須美
日本保健物理学会第51回研究発表会 2018.6
-
192Irを用いたHDR-RALSによる子宮頸癌治療時の直腸線量の実測
下窪 康史, 櫻川 加奈子, 林 裕晃, 冨田 恵美, 淺原 孝, 生島 仁史, 岡崎 徹
公益社団法人日本放射線腫瘍学会小線源部会 第20回学術大会 2018.6
-
Proper Calibration Factor of Small Type OSL Dosimeter for Evaluating Eye Lens Dose of Operators during X-ray Fluoroscopic Procedure
Tohru Okazaki, Hiroaki Hayashi, Takashi Asahara, Sota Goto, Yoshiki Mihara, Emi Tomita, Yuki Kanazawa, Natsumi Kimoto, Takuya Hashizume, Vergil LE Cruz, Cheng Wei Hsin, Sumi Yokoyama
5th Asian and Oceanic IRPA Regional Congress on Radiation Protection (AOARP5) 2018.5
-
Preliminary study for eye lens dose evaluation of the medical staff during interventional fluoroscopy using Optically Stimulated Luminescence dosimeters
Tohru Okazaki, Hiroaki Hayashi, Takashi Asahara, Sota Goto, Yoshiki Mihara, Emi Tomita, Yuki Kanazawa, Natsumi Kimoto, Takuya Hashizume, Vergil L E Cruz, Cheng Wei Hsin, Sumi Yokoyama, Ikuo Kobayashi
51st Annual meeting of Taiwan Society of Radiation Technology 2018.5
-
Phantom study using an OSL dosimeter with the aim of accurate measurement of eye lens dose exposure of operator during transfemoral cardiac catheterization using fluoroscopic examination
Takashi Asahara, Hiroaki Hayashi, Emi Tomita, Sota Goto, Natsumi Kimoto, Kenji Yamada, Sumi Yokoyama, Yuki Kanazawa, Tohru Okazaki
European Congress of Radiology 2018.5
-
Radiation dose measurement in pediatric CT examination using nanoDot dosimeters, a small type Optically Stimulated Luminescence (OSL) dosimeter
Vergil Lorenzo, Estacio Cruz, Hiroaki Hayashi, Emi Tomita, Yuki Kanazawa, Sota Goto, Yoshiki Mihara, Natsumi Kimoto, Takashi Asahara, Keiji Tada, Ryosuke Kasai, Kosaku Higashino, Kazuta Yamashita, Tohru Okazaki, Takuya Hashizume
5th Asian and Oceanic IRPA Regional Congress on Radiation Protection (AOARP5) 2018.5
-
Rectum Dose Measurements Using Novel Dosimetric System During High-Dose-Rate 192Ir Brachytherapy Treatment of Cervical Cancer
Emi TOMITA, Hiroaki HAYASHI, Yasufumi SHITAKUBO, Kanako SAKURAGAWA, Yuki KANAZAWA, Hitoshi IKUSHIMA, Tohru OKAZAKI, Takashi ASAHARA, Takuya HASHIZUME, Yoshinori MIYAHARA
第74回日本放射線技術学会総会学術大会 2018.4
-
Potentiality of Effective Atomic Number Image Based on Photon Counting Technique for Achieving Proper Diagnosis Using Plain X-ray
Natsumi Kimoto, Hiroaki Hayashi, Takashi Asahara, Akitoshi Katsumata, Tsutomu Yamakawa, Shuichiro Yamamoto, Masahiro Okada
第74回日本放射線技術学会総会学術大会 2018.4
-
Proposal of Accurate Calibration for Measuring Eye Lens Dose of the Operator during Transfemoral Cardiac Catheterization with Fluoroscopic System Using an OSL dosimeter
Takashi Asahara, Hiroaki Hayashi, Emi Tomita, Sota Goto, Sumi Yokoyama, Yuki Kanazawa, Tohru Okazaki
第74回日本放射線技術学会総会学術大会 2018.4
-
Potential of photon counting technique for next-generation type X-ray diagnostic system -To provide new medical image concerning effective atomic numbers using plain X-ray-
Natsumi Kimoto, Hiroaki Hayashi, Takashi Asahara, Emi Tomita, Sota Goto, Yoshiki Mihara, Yuki Kanazawa, Tsutomu Yamakawa, Shuichiro Yamamoto, Masashi Yamasaki, Masahiro Okada, Daisuke Hashimoto
RSNA2017 2017.11
-
Development of a new in-vivo measurement system by means of OSL dosimeters during brachytherapy for cervical cancer
Hiroaki Hayashi, Emi Tomita, Takashi Asahara, Yasufumi Shitakubo, Kanako Sakuragawa, Hiroshi Saegusa, Hitoshi Ikushima, Yuki Kanazawa, Sota Goto, Natsumi Kimoto, Yoshiki Mihara, Yoshinori Miyahara, Tohru Okazaki, Takuya Hashizume, Cruz Lorenzo, Estacio Vergil
RSNA2017 2017.11
-
Energy dependence of nanoDot OSL dosimeters to low energy X-rays using Monte-Carlo simulation code EGS5
Cruz LE Vergil, Sota Goto, Tohru Okazaki, Hiroaki Hayashi, Emi Tomita, Yoshiki Mihara, Takashi Asahara, Takuya Hashizume, Cheng Wei Hsin, Ikuo Kobayashi
AOCMP-AMPICON 2017 2017.11
-
Precise calibration factor of small-type OSL dosimeter with the aim toward analysis of exposure doses caused by scattering X-ray in the diagnostic region
Yoshiki Mihara, Hiroaki Hayashi, Takashi Asahara, Sota Goto, Natsumi Kimoto, Yuki Kanazawa, Tohru Okazaki
The 3rd International Conference on Radiological Science and Technology 2017.10
-
子宮頸癌に対するイリジウム192を用いた腔内照射における自作直腸線量計を用いたin-vivoドジメトリー
下窪 康史, 櫻川 加奈子, 林 裕晃, 冨田 恵美, 浅原 孝, 生島 仁史, 岡崎 徹, 三枝 裕司, 橋詰 拓弥, Vergil LE Cruz
第45回日本放射線技術学会秋季学術大会 2017.10
-
Development of a Novel Rectum Dosimeter for Evaluation of Organ Dose Exposure during Brachytherapy using High-Dose-Rate Ir-192
Takashi Asahara, Hiroaki Hayashi, Emi Tomita, Kanako Sakuragawa, Yasufumi Shitakubo, Hitoshi Ikushima, Tohru Okazaki
The 3rd International Conference on Radiological Science and Technology 2017.10
-
Novel material identification method using three energy bins of a photon counting detector taking into consideration Z-dependent beam hardening effect correction with the aim of producing an X-ray image with information of effective atomic number
Natsumi Kimoto, Hiroaki Hayashi, Takashi Asahara, Emi Tomita, Sota Goto, Yoshiki Mihara, Kanazawa Yuki, Tsutomu Yamakawa, Shuichiro Yamamoto, Masashi Yamasaki, Masahiro Okada, Daisuke Hashimoto
2017 IEEE Nuclear Science Symposium; Medical Imaging Conference 2017.10
-
小型OSL線量計を用いた超精密測定に向けた固有効率の決定
後藤 聡汰, 林 裕晃, 三原 由樹, 淺原 孝, 冨田 恵美, 金澤 裕樹, 岡崎 徹, 橋詰 拓弥, Vergil LE Cruz
第45回日本放射線技術学会秋季学術大会 2017.10
-
Development of Novel Rectum Dosimeter using OSL sheet with the aim of Direct Dose Measurement of Organ Dose during Brachytherapy
Takashi Asahara, Hiroaki Hayashi, Emi Tomita, Kanako Sakuragawa, Hiroshi Saegusa, Yasufumi Shitakubo, Hitoshi Ikushima, Yuki Kanazawa, Yoshiki Mihara, Yoshinori Miyahara, Tohru Okazaki, Takuya Hashizume, Cruz LE Vergil
International Symposium On Radiation Safety and Detection Technology (ISORD-9) 2017.7
-
Energy and Angular Dependence of the small type OSL Dosimeter in Diagnostic and Nuclear Medicine Regions using Monte Carlo Simulation
Cruz Lorenzo E. Vergil, Tohru Okazaki, Hiroaki Hayashi, Yoshiki Mihara, Takashi Asahara, Natsumi Kimoto, Hiroki Okino, Yuki Kanazawa, Takuya Hashizume, Ikuo Kobayashi
International Symposium On Radiation Safety and Detection Technology (ISORD-9) 2017.7
-
Direct Radiation Dose Measurement of Rectum during High-Dose-Rate 192Ir Brachytherapy for Cervical Cancer Treatment
Emi Tomita, Hiroaki Hayashi, Takashi Asahara, Kanako Sakuragawa, Yasufumi Shitakubo, Hiroshi Saegusa, Hitoshi Ikushima, Yuki Kanazawa, Sota Goto, Tohru Okazaki, Takuya Hashizume, Cruz LE Vergil
International Symposium On Radiation Safety and Detection Technology (ISORD-9) 2017.7
-
Applicability of Practical Calibration of a Small-type OSL Dosimeter For Measuring the Exposure Doses Effected by Scattered and Penetrating X-rays
Tohru Okazaki, Hiroaki Hayashi, Yoshiki Mihara, Takashi Asahara, Natsumi Kimoto, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Sumi Yokoyama, Kazuki Takegami, Takuya Hashizume, Cruz LE Vergil
International Symposium On Radiation Safety and Detection Technology (ISORD-9) 2017.7
-
Direct Dose Measurement of Patients during Pediatric Computed Tomography Examination
Hiroaki Hayashi, Emi Tomita, Sota Goto, Natsumi Kimoto, Keiji Tada, Ryosuke Kasai, Yuki Kanazawa, Yoshiki Mihara, Takashi Asahara, Tohru Okazaki, Takuya Hashizume, Cruz LE Vergil
International Symposium On Radiation Safety and Detection Technology (ISORD-9) 2017.7
-
放射線診断における被ばく線量の実測に向けた小型OSL線量計の線量校正の信頼性評価
岡崎 徹, 橋詰 拓弥, Vergil Cruz, 林 裕晃, 冨田 恵美, 後藤 聡汰, 紀本 夏実, 三原 由樹, 淺原 孝, 竹上 和希, 小林 育夫
日本保健物理学会第50回研究発表会 日本放射線安全管理学会第16回学術大会 合同大会 2017.6
-
小型OSL線量計を用いた新生児CT撮影時における入射表面線量の実測への検討
岡崎 徹, 橋詰 拓弥, Vergil Cruz, 林 裕晃, 冨田 恵美, 後藤 聡汰, 笠井 亮佑, 紀本 夏実, 三原 由樹, 淺原 孝, 多田 佳司, 小林 育夫
日本保健物理学会第50回研究発表会 日本放射線安全管理学会第16回学術大会 合同大会 2017.6
-
Simulation study for effective reduction procedure of scattered Xrays toward high accuracy material identification based on photon counting technique
Takashi Asahara, Kimoto Natsumi, Hiroaki Hayashi, Yuki Kanazawa, Katsumata Akitoshi, Nishiyama Wataru, Yamakawa Tsutomu, Yamamoto Shuichiro, Yamasaki Masashi, Okada Masahiro
第113回日本医学物理学会学術大会 2017.4
-
Preliminary study for exposure dose measurement of people assisting during a pediatric X-ray procedure by means of a small-type OSL dosimeter
Hiroaki Hayashi, Yoshiki Mihara, Natsumi Kimoto, Takashi Asahara, Kenji Yamada, Yuki Kanazawa, Masafumi Harada, Tohru Okazaki, Takuya Hashizume
European Congress of Radiology 2017.3
-
Response functions of multi-pixel type CdTe detector, --- toward development of precise material identification in diagnosti x-ray images by means of photon counting ---
Hiroaki Hayashi, Asahara Takashi, Kimoto Natsumi, Yuki Kanazawa, Yamakawa Tsutomu, Yamamoto Shuichiro, Yamasaki Masashi, Okada Masahiro
SPIE Medical Imaging 2017.2
-
Development of a novel method based on a photon counting technique with the aim of precise material identification in clinical X-ray diagnosis
Natsumi Kimoto, Hiroaki Hayashi, Takashi Asahara, Yuki Kanazawa, Tsutomu Yamakawa, Shuichiro Yamamoto, Masashi Yamasaki, Masahiro Okada
SPIE Medical Imaging 2017.2
-
Basic study for material identification toward development of a next generation type X-ray diagnosis detector based on a photon counting technique
Natsumi Kimoto, Hiroaki Hayashi, Takashi Asahara, Yoshiki Mihara, Yuki Kanazawa, Tsutomu Yamakawa, Shuichiro Yamamoto, Masashi Yamasaki, Masahiro Okada
22nd International Conference on Medical Physics ICMP 2016.12
-
Calculation of energy and angular dependences of the small-type OSL dosimeter in the diagnostic and nuclear medicine regions using the Monte-Carlo simulation code
Tohru Okazaki, Hiroaki Hayashi, Hiroki Okino, Yoshiki Mihara, Takashi Asahara, Natsumi Kimoto, Yuki Kanazawa, Kazuki Takegami, Takuya Hashizume, Ikuo Kobayashi, Reginaldo A. Kaila Ann Mary
22nd International Conference on Medical Physics ICMP 2016.12
-
小型OSL線量計を用いた小児X線撮影における介助者被ばく実測に向けた現状と課題
林 裕晃, 三原 由樹, 淺原 孝, 紀本 夏実, 金澤 裕樹, 山田 健二, 笠井 亮佑, 岡崎 徹, 橋詰 拓弥, 小林 育夫
医用画像情報学会(MII)平成28年度秋季(第176回)大会 2016.10
-
シミュレーションコードEGS5を用いた137Csと60Coのγ線に対する小型OSL線量計の角度依存性の評価
沖野 啓樹, 浅原 孝, 三原 由樹, 林 裕晃, 金澤 裕樹, 岡崎 徹, 橋詰 拓弥, 小林 育夫
第44回日本放射線技術学会秋季学術大会 2016.10
-
Fundamental study for material identification to develop next generation type X-ray diagnosis
Natsumi Kimoto, Takashi Asahara, Hiroaki Hayashi, Yamakawa Tsutomu, Yamamoto Shuichiro, Yamasashi Masaki, Okada Masahiro
Tokushima Bioscience Retreat 2016.9